【摘要】 用一个均匀的单层壳作为“参考”结构,把环筋当作“外载”考虑其效应.利用“残余势”法处理流体和壳体之间耦合效应,导出了无限长、环筋等距分布圆柱壳体在计及中面有伸长和无伸长时,所有模式下的动响应表达式.方程式通过不同程度简化,能得到前人的一些结果.本文计算了两组壳体参数,绘出了相应的曲线,并比较了不同方法的结果.更多还原

【Abstract】 This method employs a simple,unstiffened uniform circular cylindrical shell as a“reference structure”and treats the ring stiffeners as“external”loadings on the uniformshell.Based on the assumption of small perturbation,the coupled effect between the fluidand shell is considered.The real external loading on the shell is the sum of the pressureof the incident shock wave and the scattered waves.In order to avoid the difficulty inthe direct inversion of the Laplace transformation,the“residual potential”method isused.The elastic response of the shell is obtained by a series in terms of all normalmodes of oscillation of the structure,including both the non-extensional and extensionaleffects in all modes.Calculation was made for two groups of data and curves were drawn from thecalculated results,from which some useful conclusions can be reached.The equations derived in this paper can be reduced to be identical with someequations published by other workers.更多还原